Django-South 内省规则不起作用

发布于 2024-10-12 07:25:30 字数 2152 浏览 8 评论 0原文

我正在使用 Django 1.2.3 和 South 0.7.3。

我正在尝试将我的应用程序(名为 core)转换为使用 Django-South。我正在使用一个自定义模型/字段,名为 ImageWithThumbsField。它基本上只是 ol' django.db.models.ImageField ,具有一些属性,例如高度、重量等。

在尝试 ./manage.py Convert_to_auth core 时,我收到了南队的冻结错误。我不知道为什么,我可能错过了一些东西......

我正在使用一个简单的自定义模型:

from django.db.models import ImageField

class ImageWithThumbsField(ImageField):
    def __init__(self, verbose_name=None, name=None, width_field=None, height_field=None, sizes=None, **kwargs):
        self.verbose_name=verbose_name
        self.name=name
        self.width_field=width_field
        self.height_field=height_field
        self.sizes = sizes
        super(ImageField, self).__init__(**kwargs)

是我的内省规则,我将其添加到我的 models.py 的顶部:

from south.modelsinspector import add_introspection_rules
from lib.thumbs import ImageWithThumbsField

add_introspection_rules(
    [
        (
            (ImageWithThumbsField, ),
            [],
            {
                "verbose_name": ["verbose_name", {"default": None}],
                "name":         ["name",         {"default": None}],
                "width_field":  ["width_field",  {"default": None}],
                "height_field": ["height_field", {"default": None}],
                "sizes":        ["sizes",        {"default": None}],
            },
        ),
    ],
    ["^core/.fields/.ImageWithThumbsField",])

这 是我收到的错误:

! Cannot freeze field 'core.additionalmaterialphoto.photo'
! (this field has class lib.thumbs.ImageWithThumbsField)
! Cannot freeze field 'core.material.photo'
! (this field has class lib.thumbs.ImageWithThumbsField)
! Cannot freeze field 'core.material.formulaimage'
! (this field has class lib.thumbs.ImageWithThumbsField)

! South cannot introspect some fields; this is probably because they are custom
! fields. If they worked in 0.6 or below, this is because we have removed the
! models parser (it often broke things).
! To fix this, read http://south.aeracode.org/wiki/MyFieldsDontWork

有人知道为什么吗?我做错了什么?

I'm using Django 1.2.3 and South 0.7.3.

I am trying to convert my app (named core) to use Django-South. I have a custom model/field that I'm using, named ImageWithThumbsField. It's basically just the ol' django.db.models.ImageField with some attributes such as height, weight, etc.

While trying to ./manage.py convert_to_auth core I receieve South's freezing errors. I have no idea why, I'm Probably missing something...

I am using a simple custom Model:

from django.db.models import ImageField

class ImageWithThumbsField(ImageField):
    def __init__(self, verbose_name=None, name=None, width_field=None, height_field=None, sizes=None, **kwargs):
        self.verbose_name=verbose_name
        self.name=name
        self.width_field=width_field
        self.height_field=height_field
        self.sizes = sizes
        super(ImageField, self).__init__(**kwargs)

And this is my introspection rule, which I add to the top of my models.py:

from south.modelsinspector import add_introspection_rules
from lib.thumbs import ImageWithThumbsField

add_introspection_rules(
    [
        (
            (ImageWithThumbsField, ),
            [],
            {
                "verbose_name": ["verbose_name", {"default": None}],
                "name":         ["name",         {"default": None}],
                "width_field":  ["width_field",  {"default": None}],
                "height_field": ["height_field", {"default": None}],
                "sizes":        ["sizes",        {"default": None}],
            },
        ),
    ],
    ["^core/.fields/.ImageWithThumbsField",])

This is the errors I receieve:

! Cannot freeze field 'core.additionalmaterialphoto.photo'
! (this field has class lib.thumbs.ImageWithThumbsField)
! Cannot freeze field 'core.material.photo'
! (this field has class lib.thumbs.ImageWithThumbsField)
! Cannot freeze field 'core.material.formulaimage'
! (this field has class lib.thumbs.ImageWithThumbsField)

! South cannot introspect some fields; this is probably because they are custom
! fields. If they worked in 0.6 or below, this is because we have removed the
! models parser (it often broke things).
! To fix this, read http://south.aeracode.org/wiki/MyFieldsDontWork

Does anybody know why? What am I doing wrong?

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请爱~陌生人 2024-10-19 07:25:30

我得到了它! :)

我改变了这个: ["^core/.fields/.ImageWithThumbsField",]

改为: ["^lib\.thumbs\.ImageWithThumbsField",]

这整行是Django字段类型的python路径的正则表达式(再读一遍,长句子)。

South 偶然发现了在路径 lib.thumbs 中声明的字段名称 ImageWithThumbsField。我给了他一条错误的道路,所以南在偶然发现这片土地时仍然不知道该怎么办。

一旦我给了他正确的路径,它就知道在他到达后如何处理该字段。

I got it! :)

I changed this: ["^core/.fields/.ImageWithThumbsField",]

To this: ["^lib\.thumbs\.ImageWithThumbsField",]

This whole line is a regular-expression of python paths of Django field types (read this again, long sentence).

South stumbled upon a field name ImageWithThumbsField that was declared in the path lib.thumbs. I gave him a wrong path, so South still didn't know what to do when stumbling upon this field.

Once I gave him the correct path, it knew how to handle the field once he got to it.

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